import random

options = ["rock", "paper", "scissors"]

# Allow for replays using a while loop

while True:

# Get the user's choice

user_choice = input("Choose rock, paper, or scissors: ").lower()

# Validation

if user_choice not in options:

print("Invalid choice. Please choose rock, paper, or scissors.")

continue

# Choose a random computer choice

computer_choice = random.choice(options)

print(f"Computer chose {computer_choice}.")

# Determine the winner

if user_choice == computer_choice:

print("It's a tie!")

elif (user_choice == "rock" and computer_choice == "scissors") or \

(user_choice == "paper" and computer_choice == "rock") or \

(user_choice == "scissors" and computer_choice == "paper"):

print("You win!")

else:

print("You lose!")

# Ask if the user wants to play again

play_again = input("Play again? (yes/no): ").lower()

if play_again != "yes":

break